It would appear that the activity around NZ'sfaults are still adjusting to earlier movements like Christchurch and Drendan, as they grind together upon each other.. like one of those sliding block puzzles, when one moves, the others have to adjust... wishing all those whom have also felt witnessed the Earths adjustings, safe times and hopes.
youtube has a just started new documentary series (mostly in English) by NHK (unfortunately) called 'MegaQuakes' if you wish/can stomach it - newer tectonic theor-y/ies, mapping methods and the results of interpretations associated imagery explainations - so far I've only seen the 1st one, there perhaps only got to number 2 or 3 so far IRL, but I was quite pleasantly surprised this slicky done and presented programme from NHK (Japans BBC-a-like).